'Nuclear Sharks' explores the silent, stealthy symbol of the Cold War. A war waged outside public view. A war about strategy and world domination. A war of technological advancement, with lethal consequences. By the early 1950's, the United States and the Soviet Union are entrenched in a harrowing conflict many fear will bring an end to humanity. This gripping series reveals the stories of submarines sunk to the bottom, their nuclear power plants in meltdown. Such incidents remained closely guarded military secrets both on the American and the Soviet sides.